For example, are you asking about:
* Marble as a rock: A metamorphic rock used in construction and sculpture.
* Marble as a game: A game played with balls on a board.
* Marble as a term in slang: It can refer to a testicle, or a type of cigarette.
* Marble as a term in other contexts: There are many other possibilities depending on the specific context.
Please tell me more about what you're interested in, and I'll be happy to help you understand the meaning of "marble" in that context.